国产一级在线现免费观看_忘穿内裤被男同桌c我_超h肉乱爽文_毛片免费网

Provide two kinds of PPD:White lump ,White flake .

Purity (%):White color:99 .9min

Application:

Dye intermediate:Azo dyestuff,Sulphur dyestuff,Acid dyestuff and rubber antioxidant

Polymerization:PPD+Terepht haloyl chloride → polyterepht haloyl-p-phenylene diamine fibre

Dyestuff:PPD+HCL+HF →Black dyestuff

Gasoline polymerization inhibitor and developer,airplane coatings , bullet-proof garments and wall coatings ,etc

Production Properties:White to reddish colcr to dust color.The
color will darken if exposed in the air.Stored in airproof,dry space   away from light.

Easy to dissolve in hot water,ethanol ,aether,chloroform , ratherish  to dissolve in cold water.